GeoJSON ⇄ TopoJSON & GIS Converter
Professional spatial and GIS data conversion tool. Convert Google Earth KML, GPS GPX tracks, CSV coordinate tables, and TopoJSON into standardized GeoJSON format and vice versa. Features live geometry validation, bounding box inspection, and TopoJSON topology compression. Zero server uploads guarantee 100% privacy.
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How to Convert GIS Data in 3 Steps
Upload or Paste Spatial Data
Upload your .kml, .gpx, .csv, .topojson, or .geojson file, or paste raw text.
Select Output Format
Choose your target format (GeoJSON, TopoJSON compressed, or CSV coordinate table).
Inspect & Download
Review geometry statistics and bounding boxes, then copy or download your converted spatial file.
Frequently Asked Questions
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